Wife of Orlando Pulse terrorist Omar Mateen WARNED police he plotted Disney World attack

THE homophobic Islamic State psychopath who mercilessly gunned down hundreds of Orlando clubbers was reportedly scouting Disney World as a possible target.

Omar Mateen and his wife, Noor Zahi Salman, visited Walt Disney World in April, according to a US law enforcement source.

Salman reportedly warned federal authorities that her husband had been "scouting Downtown Disney and Pulse for attacks" before her partner murdered 49 people.

Unlike the four Disney World theme parks, Downtown Disney, which was recently renamed Disney Springs, doesn't have security and bag check before entry.

Security is much tighter at Magic Kingdom, Hollywood Studios, Animal Kingdom and Epcot, with metal detectors installed outside and guests randomly selected to undergo additional screening checks.

Mateen was investigated by the FBI twice before Sunday's tragedy but went on to purchase an AR-15-style assault rifle and a Sig Sauer RMCX on June 4 – just one week before the attack, according to the insider.

He was also said to be carrying a Glock 9mm handgun and a Smith and Wesson .38 caliber revolver.

The first investigation by the FBI reportedly occurred after Mateen made concerning comments to co-workers about links to terrorist groups.

As part of their investigation the FBI watched Mateen, spoke to witnesses and interviewed the killer on two separate occasions, but the investigation was ultimately closed, says a federal law enforcement source.

In 2014, the FBI opened a second investigation into Mateen for his ties to a Florida-born suicide bomber, Moner Mohammad Abu-Salha, who killed himself in Syria in 2014.

There was not enough evidence at the time and the case was closed, the source says.

Mateen used several Facebook accounts and also used the internet to research the San Bernadino shooters and a local gun range.

On Sunday, before the massacre, the ISIS terrorist posted about his allegiance to ISIS leader Abu Bakr al-Baghdadi, writing: "May Allah accept me."